hi I just recently accuired a rover ride on mower model 5144 serial number 369 02208 with a Tecumseh vertical shaft engine it dosent have the engine capacity or hp marked on it but I found these numbers on the rear of the engine on the bottom of the engine cowl so here they are==TVM19515001HSER2103D I hope some one can identify the engine it has a provision for a starter motor in the cowl but its got a blank off plate there so its the good old pull start and its got heaps of compression n abit of a bugger to strart some days cheers tricky